Dynamic response of nonlocal strain gradient FG nanobeam reinforced by carbon nanotubes under moving point load

Küçük Resim Yok

Tarih

2021

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer Heidelberg

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this study, the dynamic behavior of composite beams reinforced by carbon nanotubes (CNTs) exposed to a mass moving is investigated. By considering the external potential energy due to the applied moving mass, the equations of motion of the CNT-reinforced beam are obtained using Hamilton's principle by combining Reddy's third-order shear deformation theory and nonlocal strain gradient theory. Three types of aligned CNT-reinforced beams are considered, namely uniformly distributed CNT beams (UD-CNT) and functionally graded CNT beams type ? (FG?-CNT), and type X (FGX-CNT). Navier's procedure is applied to obtain the closed-form solutions of simply supported CNT-reinforced beams. Verification of the present solution with previous works is presented. A detailed parametric analysis is carried out to highlight the impact of moving load velocity, nonlocal parameter, material scale parameter, total volume fraction and CNTs distribution patterns on the midspan deflections of CNTs-reinforced composite beams. The proposed model is useful in the designing and analyzing of MEMS/NEMS, nanosensor, and nanoactuator manufactured from CNTs.

Açıklama

Anahtar Kelimeler

Free-Vibration Analysis, Composite Beams, Nonlinear Vibration, Forced Vibration, Cnts, Stability, Simulations

Kaynak

European Physical Journal Plus

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

136

Sayı

4

Künye